Putranto, Thomas Triadi; Rüde, Thomas; Irawan, Dasapta Erwin (2016): Hydrochemical properties of groundwater samples in Semarang area, Java Island, Indonesia (1992, 1993, 2003, 2006, and 2007) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.862987, Supplement to: Putranto, Thomas Triadi; Rüde, Thomas (2016): Hydrogeological model of an urban city in a coastal area, case study: Semarang, Indonesia. Indonesian Journal on Geoscience, 3(1), 17-27, https://doi.org/10.17014/ijog.3.1.17-27
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Abstract:
In Semarang City, groundwater has been exploited as a natural resource since 1841. The groundwater exploited in deep wells is concentrated in confined aquifers. The previous hydrogeological model was developed in one unit of aquifer and refined then by using several hydrostratigraphical units following a regional hydrogeological map without any further analysis. At present, there is a lack of precise hydrogeological model which integrates geological and hydrogeological data, in particular for multiple aquifers in Semarang. Thus, the aim of this paper is to develop a hydrogeological model for the multiple aquifers in Semarang using an integrated data approach. Groundwater samples in the confined aquifers have been analyzed to define the water type and its lateral distribution. Two hydrogeological cross sections were then created based on several borelog data to define a hydrostratigraphical unit (HSU). The HSU result indicates the hydrogeological model of Semarang consists of two aquifers, three aquitards, and one aquiclude. Aquifer 1 is unconfined, while Aquifer 2 is confined. Aquifer 2 is classified into three groups (2a, 2b, and 2c) based on analyses of major ion content and hydrostratigraphical cross sections.
Coverage:
Median Latitude: -6.973785 * Median Longitude: 110.453966 * South-bound Latitude: -7.071028 * West-bound Longitude: 110.289343 * North-bound Latitude: -6.869083 * East-bound Longitude: 110.724146
Date/Time Start: 1992-01-01T00:00:00 * Date/Time End: 2007-12-31T23:59:00
Minimum ELEVATION: 1.0 m a.s.l. * Maximum ELEVATION: 138.0 m a.s.l.
Event(s):
Comment:
The following dataset contains hydrochemical properties of groundwater samples taken from well points around Semarang area, Mid Java Province, Indonesia. All of 58 samples were taken in 1992, 1993, 2003, 2006, and 2007 using well point data from several reports from Ministry of Energy and Mineral Resources and independent consultants. We measured 20 parameters in each samples (sample id, coord X, coord Y, well depth, water level, water elevation, TDS, pH, EC, K, Ca, Na, Mg, Cl, SO4, HCO3, year, ion balance, screen location, and chemical facies). The chemical composition were tested in the Water Quality Laboratory, Universitas Diponegoro using mass spectrofotometer method.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Putranto, Thomas Triadi | |||
| 2 | Area/locality | Area | Putranto, Thomas Triadi | |||
| 3 | DATE/TIME | Date/Time | Putranto, Thomas Triadi | Geocode – year of sample taken | ||
| 4 | Latitude of event | Latitude | Putranto, Thomas Triadi | |||
| 5 | Longitude of event | Longitude | Putranto, Thomas Triadi | |||
| 6 | UTM Easting, Universal Transverse Mercator | UTM east | m | Putranto, Thomas Triadi | Handheld GPS, Garmin | |
| 7 | UTM Northing, Universal Transverse Mercator | UTM north | m | Putranto, Thomas Triadi | Handheld GPS, Garmin | |
| 8 | UTM Zone, Universal Transverse Mercator | UTM Zone | Putranto, Thomas Triadi | Handheld GPS, Garmin | ||
| 9 | Depth, well | Depth well | m | Putranto, Thomas Triadi | Portable water detector | |
| 10 | Water level | WL | m | Putranto, Thomas Triadi | Portable water detector | Groundwater level |
| 11 | ELEVATION | Elevation | m a.s.l. | Putranto, Thomas Triadi | Portable water detector | Geocode – Groundwater level |
| 12 | Sample position | Samp pos | Putranto, Thomas Triadi | Portable water quality meter (Hanna Instruments) | Depth of screen position in meter | |
| 13 | Total dissolved solids | TDS | mg/l | Putranto, Thomas Triadi | Portable water quality meter (Hanna Instruments) | |
| 14 | pH | pH | Putranto, Thomas Triadi | Portable water quality meter (Hanna Instruments) | ||
| 15 | Conductivity, electrical | Cond electr | µS/cm | Putranto, Thomas Triadi | Portable water quality meter (Hanna Instruments) | |
| 16 | Potassium | K+ | mg/l | Putranto, Thomas Triadi | Spectrophotometric | |
| 17 | Calcium | Ca2+ | mg/l | Putranto, Thomas Triadi | Spectrophotometric | |
| 18 | Magnesium | Mg2+ | mg/l | Putranto, Thomas Triadi | Spectrophotometric | |
| 19 | Sodium | Na+ | mg/l | Putranto, Thomas Triadi | Spectrophotometric | |
| 20 | Sulfate | [SO4]2- | mg/l | Putranto, Thomas Triadi | Spectrophotometric | |
| 21 | Chloride | Cl- | mg/l | Putranto, Thomas Triadi | Spectrophotometric | |
| 22 | Bicarbonate ion | [HCO3]- | mg/l | Putranto, Thomas Triadi | Spectrophotometric | |
| 23 | Balance | Balance | Putranto, Thomas Triadi | Calculated | Result of ion balance calculation in percent | |
| 24 | Aquifer type | Aquifer | Putranto, Thomas Triadi | |||
| 25 | Facies name/code | Facies | Putranto, Thomas Triadi | Hydrochemical facies |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1131 data points